Method and device in wireless communication system that supports broadcast signals

ABSTRACT

A method and a device in a User Equipment (UE) and a base station used for wireless communication systems that support broadcast signals. The UE receives a first radio signal on a first time-frequency resource. The first radio signal comprises a first RS sequence, RSs in the first RS sequence are mapped from lower frequency to higher frequency in frequency domain, the first time-frequency resource belongs to a first frequency domain resource. The first frequency domain resource comprises K frequency domain sub-resource(s). (A) Position(s) of the K frequency domain sub-resource(s) in the first frequency domain resource is(are) unfixed, RSs of the first RS sequence in a given frequency domain sub-resource are not related to a position of the given frequency domain sub-resource in the first frequency domain resource. Therefore, the UE is able to correctly receive RSs even without knowing the position of frequency domain resources in the system bandwidth.

CROSS REFERENCE TO RELATED APPLICATION

This application is a continuation of International Application No.PCT/CN2017/094836, filed Jul. 28, 2017, claiming the priority benefit ofChinese Patent Application Serial Number 201610754332.8, filed on Aug.29, 2016, the full disclosure of which is incorporated herein byreference.

BACKGROUND Technical Field

The present disclosure relates to methods and devices in mobilecommunication technical field, and in particular to wirelesscommunication schemes and devices in systems supporting broadcastsignals.

Related Art

According to discussions of 3rd Generation Partner Project (3GPP) RadioAccess Network 1 (RAN1), the design of New Radio (NR) system must havesound forward compatibility. To serve this purpose, the design of NRsystem needs to be sufficiently flexible. But in the meanwhile, aflexible design also raises the uncertainty of the system, henceincreased complexity of User Equipment (UE) processing. Given that theflexibility of the design is fully guaranteed, to streamline processingof UE to ensure normal operation of NR system becomes a researchorientation.

SUMMARY

The inventor finds through researches that under a flexible systemdesign, system information about NR system will not be transmitted on aspecific frequency domain resource, so a UE needs to monitor differentfrequency domain resources to receive system information. In existing3GPP Long-Term Evolution (LTE) system, positions of a Reference Signal(RS) sequence and sub-carriers occupied by RSs in the entire systembandwidth are interrelated. When monitoring different frequency domainresources, a UE finds it hard to acquire the position of the monitoredfrequency domain resource in the whole system bandwidth, therefore, ifemploying methods in existing 3GPP LTE system, the UE will not be ableto acquire an RS sequence on the frequency domain resource beingmonitored, thus making it impossible to perform channel estimation.

In view of the above problems, the present disclosure provides asolution. It should be noted that the embodiments of the UE in thepresent disclosure and characteristics in the embodiments may be appliedto the base station, and vice versa, if there is no conflict. Andfurther, the embodiments of the present disclosure and thecharacteristics in the embodiment may be mutually combined if there isno conflict.

The present disclosure provides a method in a UE for broadcast signals,comprising:

receiving a first radio signal on a first time-frequency resource;

herein, the first radio signal comprises part or all of a first RSsequence, RSs in the first RS sequence are mapped in sequence from lowerfrequency to higher frequency in frequency domain, the firsttime-frequency resource belongs to a first frequency domain resource infrequency domain; the first frequency domain resource comprises Kfrequency domain sub-resource(s), K is a positive integer; (a)position(s) of the K frequency domain sub-resource(s) in the firstfrequency domain resource is(are) unfixed, RSs of the first RS sequencein a given frequency domain sub-resource are not related to a positionof the given frequency domain sub-resource in the first frequency domainresource, the given frequency domain sub-resource is any one of the Kfrequency domain sub-resource(s); the K is equal to 1, an RS of thefirst RS sequence corresponding to a given sub-carrier is related to thegiven sub-carrier's position relative to the K frequency domainsub-resource, or an RS of the first RS sequence corresponding to a givensub-carrier is related to the given sub-carrier's position in the firstfrequency domain resource; the given sub-carrier is located within thefirst frequency domain resource and out of the K frequency domainsub-resource(s).

In one embodiment, the bandwidth of the K frequency domainsub-resource(s) is fixed.

In one embodiment, the K is greater than 1, the K frequency domainsub-resources have equal bandwidth.

In one embodiment, the K frequency domain sub-resources are mutuallyorthogonal.

In one embodiment, the first frequency domain resource occupies theentire system bandwidth.

In one embodiment, the K frequency domain sub-resource(s) is(are) narrowbanded.

The above method ensures that the UE is still able to correctly receiveRSs in the given frequency domain sub-resource even under thecircumstance of not knowing the position of the given frequency domainsub-resource in the first frequency domain resource, and to performchannel estimation in the given frequency domain sub-resource.

In one embodiment, all RSs in the first RS sequence are transmitted bythe same antenna port.

In one embodiment, patterns of the first RS sequence in alltime-frequency resource blocks in the first time-frequency resource arethe same.

In one embodiment, the time-frequency resource blocks are PhysicalResource Block Pairs (PRBPs).

In one embodiment, each of the time-frequency resource blocks occupies apositive integer number of sub-carriers in frequency domain, and occupya positive integer number of multi-carrier symbols.

In one embodiment, the multi-carrier symbols are Orthogonal FrequencyDivision Multiplexing (OFDM) symbols.

In one embodiment, the multi-carrier symbols are Filter Bank MultiCarrier (FBMC) symbols.

In one embodiment, the multi-carrier symbols are Discrete FourierTransform Spread OFDM (DFT-S-OFDM) symbols.

In one embodiment, patterns of the first RS sequence in time-frequencyresource blocks are patterns of Channel State Information-ReferenceSignal (CSI-RS) in time-frequency resource blocks.

In one embodiment, patterns of the first RS sequence in time-frequencyresource blocks are patterns of Demodulation Reference Signals (DMRS) intime-frequency resource blocks.

In one embodiment, all RSs in the first RS sequence are transmitted onone same physical layer channel.

Specifically, according to one aspect of the present disclosure,comprising:

determining a first reference sequence;

herein the K is 1, the RS of the first RS sequence corresponding to thegiven sub-carrier is related to the given sub-carrier's positionrelative to the K frequency domain sub-resource, the first referencesequence is used for generating the first RS sequence, the firstreference sequence has a same length as the first RS sequence; the firstRS sequence is generated from the first reference sequence beingcyclically shifted by t1 element(s), t1 is a positive integer;

In one embodiment, the t1 is related to the position of the K frequencydomain sub-resource in the first frequency domain resource.

In one embodiment, the first RS sequence is generated from the firstreference sequence being cyclically shifted by t1 element(s) to theright, the t1 is an index of a target RS in the first RS sequence, thetarget RS is an RS corresponding to lowest frequency in RSs of the firstRS sequence transmitted on the K frequency domain sub-resource.

In one embodiment, the first RS sequence is generated from the firstreference sequence being cyclically shifted by t1 element(s) to theright, the t1 is an index of a target RS in the first RS sequence, thetarget RS is an RS corresponding to highest frequency in RSs of thefirst RS sequence transmitted on the K frequency domain sub-resource.

In one embodiment, the first reference sequence is a pseudo randomsequence. In one subembodiment, the pseudo random sequence is a part ofa Gold sequence.

In one embodiment, an identifier of a serving cell of the UE is used fordetermining the first reference sequence. In one subembodiment, theidentifier of the serving cell is a Cell-Radio Network TemporaryIdentifier (C-RNTI).

In one embodiment, the first reference sequence is cell-specific.

The above method ensures that the UE, after acquiring the position(s) ofthe K frequency domain sub-resource(s) in the first frequency domainresource, will be able to infer the first RS sequence to perform channelestimation on the first frequency domain resource.

Specifically, according to one aspect of the present disclosure,comprising:

determining a second reference sequence;

herein an RS of the second reference sequence corresponding to the givensub-carrier is related to the given sub-carrier's position in the firstfrequency domain resource; the second reference sequence is used forgenerating the first RS sequence; the second reference sequence has asame length as the first RS sequence; RSs of the first RS sequencetransmitted out of the K frequency domain sub-resource(s) arecorresponding elements in the second reference sequence.

In one embodiment, the second reference sequence is a pseudo randomsequence. In one subembodiment, the pseudo random sequence is a part ofa Gold sequence.

In one embodiment, an identifier of a serving cell of the UE is used fordetermining the second reference sequence. In one subembodiment, theidentifier of the serving cell is a C-RNTI.

In one embodiment, the second reference sequence is cell-specific.

The above method ensures that the UE, after acquiring the position(s) ofthe K frequency domain sub-resource(s) in the first frequency domainresource, will be able to infer the first RS sequence to perform channelestimation on the first frequency domain resource.

Specifically, according to one aspect of the present disclosure,comprising:

determining a third reference sequence;

herein elements in the third reference sequence and RSs of the first RSsequence transmitted in the K frequency domain sub-resource(s) have aone-to-one correspondence relationship.

In one embodiment, the third reference sequence is a pseudo randomsequence. In one subembodiment, the pseudo random sequence is a part ofa Gold sequence.

In one embodiment, an identifier of a serving cell of the UE is used fordetermining the third reference sequence. In one subembodiment, theidentifier of the serving cell is a C-RNTI.

In one embodiment, the third reference sequence is cell-specific.

In one embodiment, the third reference sequence has a same length as RSsof the first RS sequence transmitted in the K frequency domainsub-resource(s).

Specifically, according to one aspect of the present disclosure,comprising:

receiving downlink information;

herein the downlink information is used for determining the firstfrequency domain resource.

Specifically, according to one aspect of the present disclosure,comprising:

receiving downlink information;

herein the downlink information is used for determining the position(s)of the K frequency domain sub-resource(s) in the first frequency domainresource.

Specifically, according to one aspect of the present disclosure,comprising:

receiving downlink information;

herein the downlink information is used for determining the firstfrequency domain resource and the position(s) of the K frequency domainsub-resource(s) in the first frequency domain resource.

In one embodiment, the downlink information is System Information Block(SIB).

In one embodiment, the downlink information is carried by a higher-layersignaling.

In one embodiment, the downlink information is broadcast information.

The present disclosure provides a method in a base station device forbroadcast signals, comprising:

transmitting a first radio signal on a first time-frequency resource;

herein the first radio signal comprises part or all of a first RSsequence, RSs in the first RS sequence are mapped in sequence from lowerfrequency to higher frequency in frequency domain, the firsttime-frequency resource belongs to a first frequency domain resource infrequency domain; the first frequency domain resource comprises Kfrequency domain sub-resource(s), K is a positive integer; (a)position(s) of the K frequency domain sub-resource(s) in the firstfrequency domain resource is(are) unfixed, RSs of the first RS sequencein a given frequency domain sub-resource are not related to a positionof the given frequency domain sub-resource in the first frequency domainresource, the given frequency domain sub-resource is any one of the Kfrequency domain sub-resource(s); the K is equal to 1, an RS of thefirst RS sequence corresponding to a given sub-carrier is related to thegiven sub-carrier's position relative to the K frequency domainsub-resource, or an RS of the first RS sequence corresponding to a givensub-carrier is related to the given sub-carrier's position in the firstfrequency domain resource; the given sub-carrier is located within thefirst frequency domain resource and out of the K frequency domainsub-resource(s).

In one embodiment, the bandwidth of the K frequency domainsub-resource(s) is fixed.

In one embodiment, the K is greater than 1, the K frequency domainsub-resources have equal bandwidth.

In one embodiment, the K frequency domain sub-resources are mutuallyorthogonal.

In one embodiment, the first frequency domain resource occupies theentire system bandwidth.

In one embodiment, the K frequency domain sub-resource(s) is(are) narrowbanded.

Specifically, according to one aspect of the present disclosure,comprising:

determining a first reference sequence;

herein the K is 1, the RS of the first RS sequence corresponding to thegiven sub-carrier is related to the given sub-carrier's positionrelative to the K frequency domain sub-resource, the first referencesequence is used for generating the first RS sequence, the firstreference sequence has a same length as the first RS sequence, the firstRS sequence is generated from the first reference sequence beingcyclically shifted by t1 element(s), t1 is a positive integer;

In one embodiment, the first RS sequence is generated from the firstreference sequence being cyclically shifted by t1 element(s) to theright, the t1 is an index of a target RS in the first RS sequence, thetarget RS is an RS corresponding to lowest frequency in RSs of the firstRS sequence transmitted on the K frequency domain sub-resource.

In one embodiment, the first RS sequence is generated from the firstreference sequence being cyclically shifted by t1 element(s) to theright, the t1 is an index of a target RS in the first RS sequence, thetarget RS is an RS corresponding to highest frequency in RSs of thefirst RS sequence transmitted on the K frequency domain sub-resource.

In one embodiment, the first reference sequence is a pseudo randomsequence. In one subembodiment, the pseudo random sequence is a part ofa Gold sequence.

In one embodiment, an identifier of a serving cell of the UE is used fordetermining the first reference sequence. In one subembodiment, theidentifier of the serving cell is a Cell-Radio Network TemporaryIdentifier (C-RNTI).

In one embodiment, the first reference sequence is cell-specific.

Specifically, according to one aspect of the present disclosure,comprising:

determining a second reference sequence;

herein an RS of the second reference sequence corresponding to the givensub-carrier is related to the given sub-carrier's position in the firstfrequency domain resource; the second reference sequence is used forgenerating the first RS sequence; the second reference sequence has asame length as the first RS sequence; RSs of the first RS sequencetransmitted out of the K frequency domain sub-resource(s) arecorresponding elements in the second reference sequence.

In one embodiment, the second reference sequence is a pseudo randomsequence. In one subembodiment, the pseudo random sequence is a part ofa Gold sequence.

In one embodiment, an identifier of a serving cell of the UE is used fordetermining the second reference sequence. In one subembodiment, theidentifier of the serving cell is a C-RNTI.

In one embodiment, the second reference sequence is cell-specific.

Specifically, according to one aspect of the present disclosure,comprising:

determining a third reference sequence;

herein elements in the third reference sequence and RSs of the first RSsequence transmitted in one of the K frequency domain sub-resource(s)have a one-to-one correspondence relationship.

In one embodiment, the third reference sequence is a pseudo randomsequence. In one subembodiment, the pseudo random sequence is a part ofa Gold sequence.

In one embodiment, an identifier of a serving cell of the UE is used fordetermining the third reference sequence. In one subembodiment, theidentifier of the serving cell is a C-RNTI.

In one embodiment, the third reference sequence is cell-specific.

In one embodiment, the third reference sequence has a same length as RSsof the first RS sequence transmitted in the K frequency domainsub-resource(s).

Specifically, according to one aspect of the present disclosure,comprising:

transmitting downlink information;

herein the downlink information is used for determining the firstfrequency domain resource.

Specifically, according to one aspect of the present disclosure,comprising:

transmitting downlink information;

herein the downlink information is used for determining the position(s)of the K frequency domain sub-resource(s) in the first frequency domainresource.

Specifically, according to one aspect of the present disclosure,comprising:

receiving downlink information;

herein the downlink information is used for determining the firstfrequency domain resource and the position(s) of the K frequency domainsub-resource(s) in the first frequency domain resource. In oneembodiment, the downlink information is System Information Block (SIB).

In one embodiment, the downlink information is carried by a higher-layersignaling.

In one embodiment, the downlink information is broadcast information.

The present disclosure provides a UE that support broadcast signals,comprising:

a first receiver, receiving a first radio signal on a firsttime-frequency resource;

herein the first radio signal comprises part or all of a first RSsequence, RSs in the first RS sequence are mapped in sequence from lowerfrequency to higher frequency in frequency domain, the firsttime-frequency resource belongs to a first frequency domain resource infrequency domain; the first frequency domain resource comprises Kfrequency domain sub-resource(s), K is a positive integer; (a)position(s) of the K frequency domain sub-resource(s) in the firstfrequency domain resource is(are) unfixed, RSs of the first RS sequencein a given frequency domain sub-resource are not related to a positionof the given frequency domain sub-resource in the first frequency domainresource, the given frequency domain sub-resource is any one of the Kfrequency domain sub-resource(s); the K is equal to 1, an RS of thefirst RS sequence corresponding to a given sub-carrier is related to thegiven sub-carrier's position relative to the K frequency domainsub-resource, or an RS of the first RS sequence corresponding to a givensub-carrier is related to the given sub-carrier's position in the firstfrequency domain resource; the given sub-carrier is located within thefirst frequency domain resource and out of the K frequency domainsub-resource(s).

In one embodiment, the bandwidth of the K frequency domainsub-resource(s) is fixed.

In one embodiment, the K is greater than 1, the K frequency domainsub-resources have equal bandwidth.

Specifically, the UE that support broadcast signals, wherein the firstreceiver further determines a first reference sequence.

Herein the K is 1, the RS of the first RS sequence corresponding to thegiven sub-carrier is related to the given sub-carrier's positionrelative to the K frequency domain sub-resource. The first referencesequence is used for generating the first RS sequence. The firstreference sequence has a same length as the first RS sequence. The firstRS sequence is generated from the first reference sequence beingcyclically shifted by t1 element(s), t1 is a positive integer.

In one embodiment, the t1 is related to the position of the K frequencydomain sub-resource in the first frequency domain resource.

In one embodiment, the first reference sequence is a pseudo randomsequence. In one subembodiment, the pseudo random sequence is a part ofa Gold sequence.

In one embodiment, the first reference sequence is cell-specific.

Specifically, the above UE that support broadcast signals, wherein thefirst receiver further determines a second reference sequence.

herein an RS of the second reference sequence corresponding to the givensub-carrier is related to the given sub-carrier's position in the firstfrequency domain resource. The second reference sequence is used forgenerating the first RS sequence. The second reference sequence has asame length as the first RS sequence. RSs of the first RS sequencetransmitted out of the K frequency domain sub-resource(s) arecorresponding elements in the second reference sequence.

In one embodiment, the second reference sequence is a pseudo randomsequence. In one subembodiment, the pseudo random sequence is a part ofa Gold sequence.

In one embodiment, the second reference sequence is cell-specific.

Specifically, the above UE that supports broadcast signals, wherein thefirst receiver further determines a third reference sequence.

herein elements in the third reference sequence and RSs of the first RSsequence transmitted in one of the K frequency domain sub-resource(s)have a one-to-one correspondence relationship.

In one embodiment, the third reference sequence is a pseudo randomsequence. In one subembodiment, the pseudo random sequence is a part ofa Gold sequence.

In one embodiment, the third reference sequence is cell-specific.

Specifically, the above UE that supports broadcast signals, wherein thefirst receiver further receives downlink information.

herein the downlink information is used for determining the firstfrequency domain resource.

Specifically, the above UE that supports broadcast signals, wherein thefirst receiver further receives downlink information; wherein thedownlink information is used for determining the position(s) of the Kfrequency domain sub-resource(s) in the first frequency domain resource.

Specifically, the above UE that supports broadcast signals, wherein thefirst receiver further receives downlink information; wherein thedownlink information is used for determining the first frequency domainresource and the position(s) of the K frequency domain sub-resource(s)in the first frequency domain resource.

In one embodiment, the downlink information is broadcast information.

The present disclosure provides a base station device that supportsbroadcast signals, comprising:

a first transmitter, transmitting a first radio signal on a firsttime-frequency resource;

herein the first radio signal comprises part or all of a first RSsequence, RSs in the first RS sequence are mapped in sequence from lowerfrequency to higher frequency in frequency domain, the firsttime-frequency resource belongs to a first frequency domain resource infrequency domain; the first frequency domain resource comprises Kfrequency domain sub-resource(s), K is a positive integer; (a)position(s) of the K frequency domain sub-resource(s) in the firstfrequency domain resource is(are) unfixed, RSs of the first RS sequencein a given frequency domain sub-resource are not related to a positionof the given frequency domain sub-resource in the first frequency domainresource, the given frequency domain sub-resource is any one of the Kfrequency domain sub-resource(s); the K is equal to 1, an RS of thefirst RS sequence corresponding to a given sub-carrier is related to thegiven sub-carrier's position relative to the K frequency domainsub-resource, or an RS of the first RS sequence corresponding to a givensub-carrier is related to the given sub-carrier's position in the firstfrequency domain resource; the given sub-carrier is located within thefirst frequency domain resource and out of the K frequency domainsub-resource(s).

Specifically, the above base station device that supports broadcastsignals, wherein the first transmitter further determines a firstreference sequence.

herein the K is 1, the RS of the first RS sequence corresponding to thegiven sub-carrier is related to the given sub-carrier's positionrelative to the K frequency domain sub-resource. The first referencesequence is used for generating the first RS sequence. The firstreference sequence has a same length as the first RS sequence. The firstRS sequence is generated from the first reference sequence beingcyclically shifted by t1 element(s), t1 is a positive integer.

In one embodiment, the t1 is related to the position of the K frequencydomain sub-resource in the first frequency domain resource.

Specifically, the above base station device that supports broadcastsignals, wherein the first transmitter further determines a secondreference sequence.

herein, an RS of the second reference sequence corresponding to thegiven sub-carrier is related to the given sub-carrier's position in thefirst frequency domain resource. The second reference sequence is usedfor generating the first RS sequence. The second reference sequence hasa same length as the first RS sequence. RSs of the first RS sequencetransmitted out of the K frequency domain sub-resource(s) arecorresponding elements in the second reference sequence.

Specifically, the above base station device that supports broadcastsignals, wherein the first transmitter further determines a thirdreference sequence.

herein elements in the third reference sequence and RSs of the first RSsequence transmitted in one of the K frequency domain sub-resource(s)have a one-to-one correspondence relationship.

Specifically, the above base station device that supports broadcastsignals, wherein the first transmitter further transmits downlinkinformation.

Herein the downlink information is used for determining the firstfrequency domain resource.

Specifically, the above base station device that supports broadcastsignals, wherein the first transmitter further transmits downlinkinformation; wherein the downlink information is used for determiningthe position(s) of the K frequency domain sub-resource(s) in the firstfrequency domain resource.

Specifically, the above base station device that supports broadcastsignals, wherein the first transmitter further transmits downlinkinformation; wherein the downlink information is used for determiningthe first frequency domain resource and the position(s) of the Kfrequency domain sub-resource(s) in the first frequency domain resource.

In one embodiment, the downlink information is broadcast information.

The present disclosure has the following advantages over theconventional scheme:

Under the circumstance that a UE receives system information throughmonitoring different frequency domain resources, the UE is able tocorrectly receive RSs on the frequency domain resource being monitoredand use the RSs for channel estimation without needing to know theposition of the frequency domain resource being monitored in the entiresystem bandwidth.

After a UE correctly receives system information, the UE can acquirefrom downlink information the position of frequency domain resourcesoccupied by system information in the entire system bandwidth, and withthis information, the UE can acquire RS sequences on the entire systembandwidth so as to utilize part of or the entire broadband RSs toperform more accurate channel estimation.

BRIEF DESCRIPTION OF THE DRAWINGS

Other features, objects and advantages of the present disclosure willbecome more apparent from the detailed description of non-restrictiveembodiments taken in conjunction with the following drawings.

FIG. 1 illustrates a flow chart of wireless transmission according toone embodiment of the present disclosure;

FIG. 2 illustrates a schematic diagram of the mapping of K frequencydomain sub-resource(s) in a first frequency domain resource according toone embodiment of the present disclosure;

FIG. 3 illustrates a schematic diagram of the relationship between afirst RS sequence and a first reference sequence according to oneembodiment of the present disclosure;

FIG. 4 illustrates a schematic diagram of the relationship between afirst RS sequence and {a second reference sequence, a third referencesequence} according to one embodiment of the present disclosure;

FIG. 5 illustrates a block diagram illustrating the structure ofprocessing device for UE according to one embodiment of the presentdisclosure;

FIG. 6 illustrates a block diagram illustrating the structure ofprocessing device for base station device according to one embodiment ofthe present disclosure;

FIG. 7 illustrates a schematic diagram of the mapping of a first RSsequence in time-frequency domain resource according to one embodimentof the present disclosure;

FIG. 8 illustrates a flow chart of a first radio signal according to oneembodiment of the present disclosure;

FIG. 9 illustrates a schematic diagram of a network architectureaccording to one embodiment of the present disclosure;

FIG. 10 illustrates a schematic diagram of a radio protocol architectureof a user plane and a control plane according to one embodiment of thepresent disclosure;

FIG. 11 illustrates a schematic diagram of an evolved node and a UEaccording to one embodiment of the present disclosure.

EMBODIMENT 1

Embodiment 1 illustrates a flow chart of wireless transmission, as shownin FIG. 1. In FIG. 1, a base station N1 is a maintenance base station ofa serving cell of a UE U2. In FIG. 1, the step in block F1 of the figureis optional.

The base station N1 transmits downlink information in step S101; andtransmits a first radio signal on a first time-frequency resource instep S11.

The UE U2 receives downlink information in step S201; and receives afirst radio signal on a first time-frequency resource in step S21.

Herein, the first radio signal comprises part or all of a first RSsequence, RSs in the first RS sequence are mapped in sequence from lowerfrequency to higher frequency in frequency domain, the firsttime-frequency resource belongs to a first frequency domain resource infrequency domain. The first frequency domain resource comprises Kfrequency domain sub-resource(s), K is a positive integer. (A)Position(s) of the K frequency domain sub-resource(s) in the firstfrequency domain resource is(are) unfixed, RSs of the first RS sequencein a given frequency domain sub-resource are not related to a positionof the given frequency domain sub-resource in the first frequency domainresource, the given frequency domain sub-resource is any one of the Kfrequency domain sub-resource(s). The K is equal to 1, an RS of thefirst RS sequence corresponding to a given sub-carrier is related to thegiven sub-carrier's position relative to the K frequency domainsub-resource; or an RS of the first RS sequence corresponding to a givensub-carrier is related to the given sub-carrier's position in the firstfrequency domain resource. The given sub-carrier is located within thefirst frequency domain resource and out of the K frequency domainsub-resource(s). The downlink information is used by the UE U2 fordetermining at least one of {the first frequency domain resource, theposition(s) of the K frequency domain sub-resource(s) in the firstfrequency domain resource}.

In one embodiment, the bandwidth of the K frequency domainsub-resource(s) is fixed.

In one embodiment, the K is greater than 1, the K frequency domainsub-resources have equal bandwidth.

In one embodiment, the K frequency domain sub-resources are mutuallyorthogonal.

In one embodiment, the first frequency domain resource occupies theentire system bandwidth.

In one embodiment, the K frequency domain sub-resource(s) is(are) narrowbanded.

In one embodiment, the downlink information is System Information Block(SIB).

In one embodiment, the downlink information is carried by a higher-layersignaling.

In one embodiment, the downlink information is broadcast information.

EMBODIMENT 2

Embodiment 2 illustrates a schematic diagram of the mapping of Kfrequency domain sub-resource(s) in a first frequency domain resource,as shown in FIG. 2.

In embodiment 2, the first frequency domain resource comprises Kfrequency domain sub-resource(s), the K is a positive integer, theposition(s) of the K frequency domain sub-resource(s) in the firstfrequency domain resource is(are) unfixed. In FIG. 2, k is a positiveinteger greater than 1 and less than the K.

In one embodiment, the bandwidth of the K frequency domainsub-resource(s) is fixed.

In one embodiment, the K is greater than 1, the K frequency domainsub-resources have equal bandwidth.

In one embodiment, the K frequency domain sub-resources are mutuallyorthogonal.

In one embodiment, the first frequency domain resource occupies theentire system bandwidth.

In one embodiment, the K frequency domain sub-resource(s) is(are) narrowbanded.

In one embodiment, the K is equal to 1.

In one embodiment, the K is greater than 1.

EMBODIMENT 3

Embodiment 3 illustrates a schematic diagram of the relationship betweena first RS sequence and a first reference sequence, as shown in FIG. 3.

In Embodiment 3, the K in the present disclosure is equal to 1, an RS ofthe first RS sequence corresponding to a given sub-carrier is related tothe given sub-carrier's position relative to the K frequency domainsub-resource in the present disclosure, the given sub-carrier is locatedwithin the first frequency domain resource and out of the K frequencydomain sub-resource. The first reference sequence is used for generatingthe first RS sequence. The first reference sequence has the same lengthas the first RS sequence. The first RS sequence is generated from thefirst reference sequence being cyclically shifted by t1 element(s), thet1 is a positive integer. In FIG. 3, the length of the first RS sequenceis denoted by L.

In one embodiment, the t1 is related to the position of the K frequencydomain sub-resource in the first frequency domain resource.

In one embodiment, the first RS sequence is generated from the firstreference sequence being cyclically shifted by t1 element(s) to theright, the t1 is an index of a target RS in the first RS sequence, thetarget RS is an RS corresponding to lowest frequency in RSs of the firstRS sequence transmitted on the K frequency domain sub-resource.

In one embodiment, the first RS sequence is generated from the firstreference sequence being cyclically shifted by t1 element(s) to theright, the t1 is an index of a target RS in the first RS sequence, thetarget RS is an RS corresponding to highest frequency in RSs of thefirst RS sequence transmitted on the K frequency domain sub-resource.

In one embodiment, the first reference sequence is a pseudo randomsequence. In one subembodiment, the pseudo random sequence is a part ofa Gold sequence.

In one embodiment, an identifier of a serving cell of the UE is used fordetermining the first reference sequence. In one subembodiment, theidentifier of the serving cell is a C-RNTI.

In one embodiment, the first reference sequence is cell-specific.

EMBODIMENT 4

Embodiment 4 illustrates a schematic diagram of the relationship betweena first RS sequence and {a second reference sequence, a third referencesequence}, as shown in FIG. 4.

In Embodiment 4, an RS of the first RS sequence corresponding to a givensub-carrier is related to the given sub-carrier's position in the firstfrequency domain resource. The given sub-carrier is located within thefirst frequency domain resource and out of the K frequency domainsub-resource(s) in the present disclosure. An RS of the second referencesequence corresponding to the given sub-carrier is related to the givensub-carrier's position in the first frequency domain resource. Thesecond reference sequence is used for generating the first RS sequence.The second reference sequence has a same length as the first RSsequence. RSs of the first RS sequence transmitted out of the Kfrequency domain sub-resource(s) are corresponding elements in thesecond reference sequence. Elements in the third reference sequence andRSs of the first RS sequence transmitted in one of the K frequencydomain sub-resource(s) have a one-to-one correspondence relationship. InFIG. 4, the length of the first RS sequence is denoted by L, the lengthof the third reference sequence is denoted by L1, wk represents an indexof a k-th given RS in the first RS sequence, the k-th given RS is an RScorresponding to lowest frequency in RSs of the first RS sequencetransmitted on a k-th frequency domain sub-resource of the K frequencydomain sub-resources, the k is a positive integer greater than 1 and notgreater than the K.

In one embodiment, the second frequency sequence is a pseudo randomsequence. In one subembodiment, the pseudo random sequence is a part ofa Gold sequence.

In one embodiment, an identifier of a serving cell of the UE in thepresent disclosure is used for determining the second referencesequence. In one subembodiment of the above embodiment, the identifierof the serving cell is a C-RNTI.

In one embodiment, the second reference sequence is cell-specific.

In one embodiment, the third reference sequence is a pseudo randomsequence. In one subembodiment of the above embodiment, the pseudorandom sequence is a part of a Gold sequence.

In one embodiment, an identifier of a serving cell of the UE is used fordetermining the third reference sequence. In one subembodiment of theabove embodiment, the identifier of the serving cell is a C-RNTI.

In one embodiment, the third reference sequence is cell-specific.

In one embodiment, the third reference sequence has a same length as RSsof the first RS sequence transmitted in the K frequency domainsub-resource(s).

EMBODIMENT 5

Embodiment 5 illustrates a block diagram illustrating the structure of aprocessing device for UE, as shown in FIG. 5. In FIG. 5, a processingdevice 500 in UE mainly comprises a first receiver 501.

In Embodiment 5, the first receiver 501 receives a first radio signal ona first time-frequency resource.

In Embodiment 5, the first radio signal comprises part or all of a firstRS sequence, RSs in the first RS sequence are mapped in sequence fromlower frequency to higher frequency in frequency domain, the firsttime-frequency resource belongs to a first frequency domain resource infrequency domain. The first frequency domain resource comprises Kfrequency domain sub-resource(s), K is a positive integer. (A)Position(s) of the K frequency domain sub-resource(s) in the firstfrequency domain resource is(are) unfixed, RSs of the first RS sequencein a given frequency domain sub-resource are not related to a positionof the given frequency domain sub-resource in the first frequency domainresource, the given frequency domain sub-resource is any one of the Kfrequency domain sub-resource(s). The K is equal to 1, an RS of thefirst RS sequence corresponding to a given sub-carrier is related to thegiven sub-carrier's position relative to the K frequency domainsub-resource; or an RS of the first RS sequence corresponding to a givensub-carrier is related to the given sub-carrier's position in the firstfrequency domain resource. The given sub-carrier is located within thefirst frequency domain resource and out of the K frequency domainsub-resource(s).

In one embodiment, the first receiver 501 further determines a firstreference sequence. Herein, the K is 1, the RS of the first RS sequencecorresponding to the given sub-carrier is related to the givensub-carrier's position relative to the K frequency domain sub-resource.The first reference sequence is used by the first receiver 501 forgenerating the first RS sequence. The first reference sequence has asame length as the first RS sequence. The first RS sequence is generatedfrom the first reference sequence being cyclically shifted by t1element(s), t1 is a positive integer;

In one embodiment, the first receiver 501 further determines a secondreference sequence. Herein, an RS of the second reference sequencecorresponding to the given sub-carrier is related to the givensub-carrier's position in the first frequency domain resource. Thesecond reference sequence is used by the first receiver 501 forgenerating the first RS sequence. The second reference sequence has asame length as the first RS sequence. RSs of the first RS sequencetransmitted out of the K frequency domain sub-resource(s) arecorresponding elements in the second reference sequence.

In one embodiment, the first receiver 501 further determines a thirdreference sequence. Herein, elements in the third reference sequence andRSs of the first RS sequence transmitted in one of the K frequencydomain sub-resource(s) have a one-to-one correspondence relationship.

In one embodiment, the first receiver 501 further receives downlinkinformation. Herein, the downlink information is used by the firstreceiver 501 for determining the first frequency domain resource.

In one embodiment, the first receiver 501 further receives downlinkinformation. Herein, the downlink information is used for determiningthe position(s) of the K frequency domain sub-resource(s) in the firstfrequency domain resource.

In one embodiment, the first receiver 501 further receives downlinkinformation. Herein, the downlink information is used for determiningthe first frequency domain resource and the position(s) of the Kfrequency domain sub-resource(s) in the first frequency domain resource.

EMBODIMENT 6

Embodiment 6 illustrates a block diagram illustrating the structure of aprocessing device for a base station device, as shown in FIG. 6. In FIG.6, a base station device 600 mainly comprises a first transmitter 601.

In Embodiment 6, a first transmitter 601 transmits a first radio signalon a first time-frequency resource.

In embodiment 6, the first radio signal comprises part or all of a firstRS sequence, RSs in the first RS sequence are mapped in sequence fromlower frequency to higher frequency in frequency domain, the firsttime-frequency resource belongs to a first frequency domain resource infrequency domain. The first frequency domain resource comprises Kfrequency domain sub-resource(s), K is a positive integer. (A)Position(s) of the K frequency domain sub-resource(s) in the firstfrequency domain resource is(are) unfixed, RSs of the first RS sequencein a given frequency domain sub-resource are not related to a positionof the given frequency domain sub-resource in the first frequency domainresource, the given frequency domain sub-resource is any one of the Kfrequency domain sub-resource(s). The K is equal to 1, an RS of thefirst RS sequence corresponding to a given sub-carrier is related to thegiven sub-carrier's position relative to the K frequency domainsub-resource; or an RS of the first RS sequence corresponding to a givensub-carrier is related to the given sub-carrier's position in the firstfrequency domain resource. The given sub-carrier is located within thefirst frequency domain resource and out of the K frequency domainsub-resource(s).

In one embodiment, the first transmitter 601 further determines a firstreference sequence. Herein, the K is 1, the RS of the first RS sequencecorresponding to the given sub-carrier is related to the givensub-carrier's position relative to the K frequency domain sub-resource.The first reference sequence is used by the first transmitter 601 forgenerating the first RS sequence. The first reference sequence has asame length as the first RS sequence. The first RS sequence is generatedfrom the first reference sequence being cyclically shifted by t1element(s), t1 is a positive integer.

In one embodiment, the first transmitter 601 further determines a secondreference sequence. Herein, an RS of the second reference sequencecorresponding to the given sub-carrier is related to the givensub-carrier's position in the first frequency domain resource. Thesecond reference sequence is used by the first transmitter 601 forgenerating the first RS sequence. The second reference sequence has asame length as the first RS sequence. RSs of the first RS sequencetransmitted out of the K frequency domain sub-resource(s) arecorresponding elements in the second reference sequence.

In one embodiment, the first transmitter 601 further determines a thirdreference sequence. Herein, elements in the third reference sequence andRSs of the first RS sequence transmitted in one of the K frequencydomain sub-resource(s) have a one-to-one correspondence relationship.

In one embodiment, the first transmitter 601 further transmits downlinkinformation. Herein, the downlink information is used for determiningthe first frequency domain resource.

In one embodiment, the first transmitter 601 further transmits downlinkinformation. Herein, the downlink information is used for determiningthe position(s) of the K frequency domain sub-resource(s) in the firstfrequency domain resource.

In one embodiment, the first transmitter 601 further transmits downlinkinformation. Herein, the downlink information is used for determiningthe first frequency domain resource and the position(s) of the Kfrequency domain sub-resource(s) in the first frequency domain resource.

EMBODIMENT 7

Embodiment 7 illustrates a schematic diagram of the mapping of a firstRS sequence in time-frequency domain resource, as shown in FIG. 7.

In FIG. 7, RSs in the first RS sequence are mapped in sequence fromlower frequency to higher frequency in frequency domain. Patterns of thefirst RS sequence in all time-frequency resource blocks in the firsttime-frequency resource are the same, as shown in FIG. 7. All RSs of thefirst RS sequence are located within the first time-frequency resource.

In FIG. 7, the first time-frequency resource comprises M time-frequencyresource blocks, indexes of the M time-frequency resource blocks are #{0, . . . , M−1}, respectively.

In one embodiment, the time-frequency resource blocks are PhysicalResource Block Pairs (PRBPs).

In one embodiment, each of the time-frequency resource blocks occupies apositive integer number of sub-carriers in frequency domain, andoccupies a positive integer number of multi-carrier symbols.

In one embodiment, the multi-carrier symbols are Orthogonal FrequencyDivision Multiplexing (OFDM) symbols.

In one embodiment, the multi-carrier symbols are Filter Bank MultiCarrier (FBMC) symbols.

In one embodiment, the multi-carrier symbols are Discrete FourierTransform Spread OFDM (DFT-S-OFDM) symbols.

In one embodiment, patterns of the first RS sequence in time-frequencyresource blocks are patterns of CSI-RS in time-frequency resourceblocks.

In one embodiment, patterns of the first RS sequence in time-frequencyresource blocks are patterns of DMRS in time-frequency resource blocks.

In one embodiment, all RSs of the first RS sequence are transmitted onone same physical layer channel.

In one embodiment, all RSs of the first RS sequence are transmitted byone same antenna port.

EMBODIMENT 8

Embodiment 8 illustrates a flow chart of a first radio signal, as shownin FIG. 8.

In Embodiment 8, the UE in the present disclosure receives a first radiosignal on a first time-frequency resource. Herein, the first radiosignal comprises part or all of a first RS sequence, RSs in the first RSsequence are mapped in sequence from lower frequency to higher frequencyin frequency domain, the first time-frequency resource belongs to afirst frequency domain resource in frequency domain; the first frequencydomain resource comprises K frequency domain sub-resource(s), K is apositive integer; (a) position(s) of the K frequency domainsub-resource(s) in the first frequency domain resource is(are) unfixed,RSs of the first RS sequence in a given frequency domain sub-resourceare not related to the position of the given frequency domainsub-resource in the first frequency domain resource, the given frequencydomain sub-resource is any one of the K frequency domainsub-resource(s); the K is equal to 1, an RS of the first RS sequencecorresponding to a given sub-carrier is related to the givensub-carrier's position relative to the K frequency domain sub-resource,or an RS of the first RS sequence corresponding to a given sub-carrieris related to the given sub-carrier's position in the first frequencydomain resource; the given sub-carrier is located within the firstfrequency domain resource and out of the K frequency domainsub-resource(s).

In one embodiment, the bandwidth of the K frequency domainsub-resource(s) is fixed.

In one embodiment, the K is greater than 1, the K frequency domainsub-resources have equal bandwidth.

In one embodiment, the K frequency domain sub-resources are mutuallyorthogonal.

In one embodiment, the first frequency domain resource occupies theentire system bandwidth.

In one embodiment, the K frequency domain sub-resource(s) is(are) narrowbanded.

In one embodiment, all RSs of the first RS sequence are transmitted byone same antenna port.

In one embodiment, patterns of the first RS sequence in alltime-frequency resource blocks in the first time-frequency resource arethe same.

In one embodiment, the time-frequency resource blocks are PRBPs.

In one embodiment, each of the time-frequency resource blocks occupies apositive integer number of sub-carriers in frequency domain, and occupya positive integer number of multi-carrier symbols.

In one embodiment, the multi-carrier symbols are OFDM symbol(s).

In one embodiment, the multi-carrier symbols are FBMC symbol(s).

In one embodiment, the multi-carrier symbols are DFT-S-OFDM symbol(s).

In one embodiment, patterns of the first RS sequence in time-frequencyresource blocks are patterns of CSI-RS in time-frequency resourceblocks.

In one embodiment, patterns of the first RS sequence in time-frequencyresource blocks are patterns of DMRS in time-frequency resource blocks.

In one embodiment, all RSs of the first RS sequence are transmitted onone same physical layer channel.

In one embodiment, the UE performs blind detection on a candidatefrequency domain sub-resource to judge whether the candidate frequencydomain sub-resource belongs to the K frequency domain sub-resource(s).

In one embodiment, the bandwidth of the candidate frequency domainsub-resource is equal to that of any of the K frequency domainsub-resource(s).

In one embodiment, the candidate frequency domain sub-resource belongsto the first frequency domain resource.

In one embodiment, the blind detection refers to: the UE performscoherent reception and energy detection over radio signals received onthe candidate frequency domain sub-resource using RSs of the first RSsequence in the K frequency domain sub-resource(s). If a result of theenergy detection is greater than a given threshold, the UE determinesthat the candidate frequency domain sub-resource belongs to the Kfrequency domain sub-resource(s); otherwise the UE determines that thecandidate frequency domain sub-resource does not belong to the Kfrequency domain sub-resource(s).

EMBODIMENT 9

Embodiment 9 illustrates a schematic diagram of a network architecture,as shown in FIG. 9.

FIG. 9 illustrates a system network architecture 900 of Long-TermEvolution (LTE), Long-Term Evolution Advanced (LTE-A) and NR 5G systems.The LTE, LTE-A and NR 5G network architecture 900 may be called anEvolved Packet System (EPS) 900. EPS 900 may comprise one or more UEs901, an E-UTRAN-NR 902, a 5G-Core Network/Evolved Packet Core(5G-CN/EPC) 910, a Home Subscriber Server (HSS) 920 and an Internetservice 930. Herein, UMTS refers to Universal Mobile TelecommunicationsSystem. EPS may be interconnected with other access networks. For simpledescriptions, these entities/interfaces are not shown. In FIG. 9, theEPS provides packet switching services. Those skilled in the art willeasily understand that various concepts presented throughout the presentdisclosure can be extended to networks providing circuit switchingservices. The E-UTRAN-NR comprises an NR node B (gNB) 903 and other gNBs904. gNB 903 provides UE 901 oriented user plane and control planeprotocol terminations. gNB 903 may be connected to other gNBs 904 via X2interface (for example, backhaul). The gNB 903 may be called a basestation, a base transceiver station, a radio base station, a radiotransceiver, a transceiver function, a Basic Service Set (BSS), anExtended Service Set (ESS), a TRP or other appropriate terms. The gNB903 provides an access point of 5G-CN/EPC 910 for the UE 901. Examplesof UE 901 include cellular phones, smart phones, Session InitiationProtocol (SIP) phones, laptop computers, Personal Digital Assistants(PDAs), Satellite Radios, Global Positioning Systems (GPSs), multimediadevices, video devices, digital audio player (for example, MP3 players),cameras, game consoles, unmanned aerial vehicles, air vehicles,narrow-band physical network equipment, machine-type communicationequipment, land vehicles, automobiles, wearable equipment, or any otherdevices with similar functions. Those skilled in the art also can callthe UE 901 a mobile station, a subscriber station, a mobile unit, asubscriber unit, a wireless unit, a remote unit, a mobile device, awireless device, a radio communication device, a remote device, a mobilesubscriber station, an access terminal, a mobile terminal, a wirelessterminal, a remote terminal, a handset, a user proxy, a mobile client, aclient or other appropriate terms. The gNB 903 is connected to the5G-CN/EPC 910 via an S1 interface. The 5G-CN/EPC 910 comprises an MME911, other MMES 914, a Service Gateway (S-GW) 912 and a Packet DateNetwork Gateway (P-GW) 913. The MME 911 is a control node for processinga signaling between the UE 901 and the 5G-CN/EPC 910. Generally, the MME911 provides bearer and connection management. All user InternetProtocol (IP) packets are transmitted through the S-GW 912. The S-GW 912is connected to P-GW 913. The P-GW 913 provides UE IP address allocationand other functions. The P-GW 913 is connected to the Internet Service930. The Internet Service 930 comprises IP services corresponding tooperators, specifically including Internet, Intranet, IP MultimediaSubsystem (IMS) and Packet Switching Streaming Services (PPSs).

In one embodiment, the UE 901 corresponds to the UE in the presentdisclosure.

In one embodiment, the gNB 903 corresponds to the base station in thepresent disclosure.

EMBODIMENT 10

Embodiment 10 illustrates a radio protocol architecture of a user planeand a control plane, as shown in FIG. 10.

FIG. 10 is a schematic diagram illustrating an embodiment of a radioprotocol architecture of a user plane and a control plane, as shown inFIG. 10. In FIG. 10, the radio protocol architecture of a UE and a gNBis represented by three layers, which are layer 1, layer 2 and layer 3,respectively. The layer 1 (L1) is the lowest layer and performs signalprocessing functions of each PHY layer. The L1 is called PHY 1001 inthis paper. The layer 2 (L2) is above the PHY 1001, and is in charge ofthe link between the UE and the gNB via the PHY 1001. In the user plane,the L2 1005 comprises a Medium Access Control (MAC) sublayer 1002, aRadio Link Control (RLC) sublayer 1003 and a Packet Data ConvergenceProtocol (PDCP) sublayer 1004. All the three sublayers terminate at thegNB of the network side. Although not described in FIG. 10, the UE maycomprise several protocol layers above L2 1005, such as a network layer(i.e. IP layer) terminated at the P-GW 913 of the network side and anapplication layer (i.e. a peer UE, a server, etc.). The PDCP sublayer1004 also provides a header compression for a higher-layer packet so asto reduce a radio transmission overhead. The PDCP sublayer 1004 providessecurity by encrypting a packet and provides support for UE handoverbetween gNBs. The RLC sublayer 1003 provides segmentation andreassembling of a higher-layer packet, retransmission of a lost packet,and reordering of a lost packet so as to compensate the disorderedreception of caused by HARQ. The MAC sublayer 1002 is also responsiblefor allocating between UEs various radio resources (i.e. resourceblocks) in a cell. The MAC sublayer 1002 is also in charge of HARQoperation. In the control plane, the radio protocol architecture of theUE and the gNB is almost the same as the radio architecture in the userplane on the PHY 1001 and the L2 1005, but there is no headercompression for the control plane. The control plane also comprises aRadio Resource Control (RRC) sublayer 1006 in the layer 3 (L3). The RRCsublayer 1006 is responsible for acquiring radio resources (i.e. radiobearer) and configuring the lower layers using an RRC signaling betweenthe gNB and the UE.

In one embodiment, the radio protocol architecture in FIG. 10 isapplicable to the UE in the present disclosure.

In one embodiment, the radio protocol architecture in FIG. 10 isapplicable to the base station device in the present disclosure.

In one embodiment, the first radio signal in the present disclosure isgenerated by the PHY 1001.

In one embodiment, the first RS sequence in the present disclosure isgenerated by the PHY 1001.

In one embodiment, the first reference sequence in the presentdisclosure is generated by the PHY 1001.

In one embodiment, the second reference sequence in the presentdisclosure is generated by the PHY 1001.

In one embodiment, the third reference sequence in the presentdisclosure is generated by the PHY 1001.

In one embodiment, the downlink information in the present disclosure isgenerated by the RRC sublayer 1006.

EMBODIMENT 11

Embodiment 11 illustrates a schematic diagram of an evolved node and aUE, as shown in FIG. 11. FIG. 11 is a block diagram of a gNB 1110 incommunication with a UE 1150 in an access network.

The gNB comprises a controller/processor 1175, a memory 1176, areceiving processor 1170, a transmitting processor 1116, a channelestimator 1178, a transmitter/receiver 1118 and antennas 1120.

The UE 1150 comprises a controller/processor 1159, a memory 1160, a datasource 1167, a transmitting processor 1168, a receiving processor 1156,a channel estimator 1158, a transmitter/receiver 1154 and antennas 1152.

In downlink (DL) transmission, at the gNB 1110 side, a higher-layerpacket coming from the core network is provided to thecontroller/processor 1175. The controller/processor 1175 providesfunctions of layer 2. In downlink transmission, the controller/processor1175 provides header compression, encrypting, packet segmentation andreordering, multiplexing between a logical channel and a transportchannel, and radio resource allocation for the UE 1150 based on variouspriorities. The controller/processor 1175 is also in charge of HARQoperation, retransmission of lost packets, and signaling to the UE 1150.The transmitting processor 1116 performs signal processing functionsused for layer 1 (that is, PHY), including encoding and interleaving, soas to ensure a forward error correction (FEC) and the mapping to signalclusters corresponding to different modulation schemes (i.e., PBSK,QPSK, M-PSK, M-QAM) at the UE 1150 side. The encoded and modulatedsignals experience spatial precoding/beamforming in the transmittingprocessor 1116 to form one or more spatial streams. The transmittingprocessor 1116 maps each of the spatial streams into sub-carriers, whichwill be multiplexed with reference signals (i.e. pilots) in time domainand/or frequency domain, and then processes the spatial stream viaInverse Fast Fourier Transform (IFFT) to generate a physical channelcarrying time-domain multi-carrier symbol streams. Each transmitter 1118converts baseband multi-carrier symbol streams provided by thetransmitting processor 1116 into radio frequency streams, which arelater provided to a corresponding antenna 1120.

In downlink transmission, at the UE 1150 side, each receiver 1154receives signals via a corresponding antenna 1152. Each receiver 1154recovers information modulated to the radio frequency carrier, andconverts radio frequency streams into baseband multi-carrier symbolstreams to be provided to the receiving processor 1156. The receivingprocessor 1156 and the channel estimator 1158 perform various signalprocessing functions of layer 1. The receiving processor 1156 convertsbaseband multi-carrier symbol streams from time-domain to frequencydomain using FFT. In frequency domain, physical layer data signals andreference signals are demultiplexed by the receiving processor 1156,wherein the reference signals will be used in the channel estimator 1158for channel estimation, physical layer data is used to recover anyspatial stream targeting the UE 1150 in the receiving processor 1156through multi-antenna detection. Symbols on each of the spatial streamsare demodulated and recovered in the receiving processor 1156 togenerate soft decisions. The soft decisions are then decoded andde-interleaved by the receiving processor 1156 so as to recoverhigher-layer data and control signals transmitted by the gNB 1110, thehigher-layer data and control signals are then provided to thecontroller/processor 1159. The controller/processor 1159 performsfunctions of layer 2. The controller/processor 1159 can be connected tothe memory 1160 that stores program codes and data. The memory 1160 is acomputer readable medium. In downlink transmission, thecontroller/processor 1159 provides demultiplexing, packet reassembling,decrypting, header decompression and control signal processing betweentransport channels and logical channels so as to recover higher-layerpackets coming from the core network. The higher-layer packets are thenprovided to all protocol layers above layer 2. Also, control signals canbe provided to layer 3 for processing. The controller/processor 1159 isalso responsible for performing error detection with ACK and/or NACKprotocol to support the HARQ operation.

In uplink (UL) transmission, at the UE 1150 side, the data source 1167provides higher-layer packets to the controller/processor 1159. The datasource 1167 represents all protocol layers above layer 2. Similar to thetransmission function at the gNB 1110 described in downlinktransmission, the controller/processor 1159 performs header compression,encrypting, packet segmentation and reordering, and multiplexing betweenlogical channels and transport channels based on radio resourceallocation of gNB 1110, and performs layer 2 functions used for a userplane and a control plane. The controller/processor 1159 is also incharge of HARQ operation, retransmission of lost packets, and signalingto the gNB 1110. The transmitting processor 1168 selects an appropriateencoding and modulation scheme, and provides multi-antenna spatialprecoding/beamforming. Spatial streams generated from multi-antennaspatial precoding/beamforming are modulated by the transmittingprocessor 1168 into multi-carrier/single-carrier symbol streams, andthen are provided to different antennas 1152 via the transmitter 1154.Each transmitter 1154 first converts baseband symbol streams provided bythe transmitting processor 1168 into radio frequency streams, andprovides the radio frequency streams to a corresponding antenna 1152.

In uplink transmission, the function of the gNB 1110 side is similar tothe receiving function of the UE 1150 side described in downlinktransmission. Each receiver 1118 receives radio frequency signals via acorresponding antenna 1120, converts the received radio frequencysignals into baseband signals, and then provides the baseband signals tothe receiving processor 1170. The receiving processor 1170 and thechannel estimator 1178 perform functions of layer 1, thecontroller/processor 1175 performs functions of layer 2. Thecontroller/processor 1175 can be connected to the memory 1176 thatstores program codes and data. The memory 1176 is a computer readablemedium. In uplink transmission, the controller/processor 1175 providesdemultiplexing, packet reassembling, decrypting, header decompressionand control signal processing between transport channels and logicalchannels so as to recover higher-layer packets coming from the UE 1150.The higher-layer packets coming from the controller/processor 1175 canbe provided to the core network. The controller/processor 1175 is alsoresponsible for performing error detection with ACK and/or NACK protocolto support HARQ operation.

In one embodiment, the UE 1150 comprises: at least one processor and atleast one memory. The at least one memory comprises computer programcodes. The at least one memory and the computer program codes areconfigured to be used in collaboration with the at least one processor.

In one embodiment, the UE 1150 comprises: a memory that stores computerreadable instruction program, the computer readable instruction programgenerates an action when executed by at least one processor. The actioncomprises: receiving the first radio signal in the present disclosure onthe first time-frequency resource in the present disclosure, determiningthe first reference sequence in the present disclosure, determining thesecond sequence in the present disclosure, determining the thirdsequence in the present disclosure, generating the first RS sequence inthe present disclosure, and receiving the downlink information in thepresent disclosure.

In one embodiment, the gNB 1110 comprises: at least one processor and atleast one memory, the at least one memory comprises computer programcodes; the at least one memory and the computer program codes areconfigured to be used in collaboration with the at least one processor.

In one embodiment, the gNB 1110 comprises: a type of memory that storescomputer readable instruction program, the computer readable instructionprogram generates an action when executed by at least one processor, theaction comprises: transmitting the first radio signal in the presentdisclosure on the first time-frequency resource in the presentdisclosure, determining the first reference sequence in the presentdisclosure, determining the second reference sequence in the presentdisclosure, determining the third reference sequence in the presentdisclosure, generating the first RS sequence in the present disclosure,and transmitting the downlink information in the present disclosure.

In one embodiment, the UE 1150 corresponds to the UE in the presentdisclosure.

In one embodiment, the UE gNB 1110 corresponds to the base station inthe present disclosure.

In one embodiment, at least one of the antennas 1120, the transmitter1118, the transmitting processor 1116 and the controller/processor 1175is used for transmitting the first radio signal in the presentdisclosure, and at least one of the antennas 1152, the receiver 1154,the receiving processor 1156, the channel estimator 1158 and thecontroller/processor 1159 is used for receiving the first radio signalin the present disclosure.

In one embodiment, the transmitting processor 1116 is used forgenerating the first RS sequence in the present disclosure, at least oneof the receiving processor 1156 and the channel estimator 1158 is usedfor generating the first RS sequence in the present disclosure.

In one embodiment, the transmitting processor 1116 is used fordetermining the first reference sequence in the present disclosure, atleast one of the receiving processor 1156 and the channel estimator 1158is used for determining the first reference sequence in the presentdisclosure.

In one embodiment, the transmitting processor 1116 is used fordetermining the second reference sequence in the present disclosure, atleast one of the receiving processor 1156 and the channel estimator 1158is used for determining the second reference sequence in the presentdisclosure.

In one embodiment, the transmitting processor 1116 is used fordetermining the third reference sequence in the present disclosure, atleast one of the receiving processor 1156 and the channel estimator 1158is used for determining the third reference sequence in the presentdisclosure.

In one embodiment, at least one of the antennas 1120, the transmitter1118, the transmitting processor 1116 and the controller/processor 1175is used for transmitting the downlink information in the presentdisclosure, at least one of the antennas 1152, the receiver 1154, thereceiving processor 1156, the channel estimator 1158 and thecontroller/processor 1159 is used for receiving the downlink informationin the present disclosure.

In one embodiment, the first receiver 501 in Embodiment 5 comprises atleast one of the antennas 1152, the receiver 1154, the receivingprocessor 1156, the channel estimator 1158, the controller/processor1159 and the memory 1160.

In one embodiment, the first transmitter 601 in Embodiment 6 comprisesat least one of the antennas 1120, the transmitter 1118, thetransmitting processor 1116, the controller/processor 1175 and thememory 1176.

The ordinary skill in the art may understand that all or part of stepsin the above method may be implemented by instructing hardware through aprogram. The program may be stored in a computer readable storagemedium, for example Read-Only-Memory (ROM), hard disk or compact disc,etc. Optionally, all or part of steps in the above embodiments also maybe implemented by one or more integrated circuits. Correspondingly, eachmodule unit in the above embodiment may be realized in the form ofhardware, or in the form of software function modules. The presentdisclosure is not limited to any combination of hardware and software inspecific forms. The UE or terminal in the present disclosure includesbut is not limited to unmanned aerial vehicles, communication modules onunmanned aerial vehicles, telecontrolled aircrafts, aircrafts,diminutive airplanes, mobile phones, tablet computers, notebooks,vehicle-mounted communication equipment, wireless sensor, network cards,terminals for Internet of Things, RFID terminals, NB-IOT terminals,Machine Type Communication (MTC) terminals, enhanced MTC (eMTC)terminals, data cards, low-cost mobile phones, low-cost tabletcomputers, etc. The base station in the present disclosure includes butis not limited to macro-cellular base stations, micro-cellular basestations, home base stations, relay base station, gNB (NR node B),Transmitter Receiver Point (TRP) and other radio communicationequipment.

The above are merely the preferred embodiments of the present disclosureand are not intended to limit the scope of protection of the presentdisclosure. Any modification, equivalent substitute and improvement madewithin the spirit and principle of the present disclosure are intendedto be included within the scope of protection of the present disclosure.

What is claimed is:
 1. A method in a User Equipment (UE) that supportsbroadcast signals, comprising: receiving a first radio signal on a firsttime-frequency resource; wherein the first radio signal comprises partor all of a first RS sequence, RSs in the first RS sequence are mappedin sequence from lower frequency to higher frequency in frequencydomain, the first time-frequency resource belongs to a first frequencydomain resource in frequency domain; the first frequency domain resourcecomprises K frequency domain sub-resource(s), K is a positive integer;(a) position(s) of the K frequency domain sub-resource(s) in the firstfrequency domain resource is(are) unfixed, RSs of the first RS sequencein a given frequency domain sub-resource are not related to a positionof the given frequency domain sub-resource in the first frequency domainresource, the given frequency domain sub-resource is any one of the Kfrequency domain sub-resource(s); the K is equal to 1, an RS of thefirst RS sequence corresponding to a given sub-carrier is related to thegiven sub-carrier's position relative to the K frequency domainsub-resource, or an RS of the first RS sequence corresponding to a givensub-carrier is related to the given sub-carrier's position in the firstfrequency domain resource; the given sub-carrier is located within thefirst frequency domain resource and out of the K frequency domainsub-resource(s).
 2. The method according to claim 1, comprising:determining a first reference sequence, wherein the K is 1, the RS ofthe first RS sequence corresponding to the given sub-carrier is relatedto the given sub-carrier's position relative to the K frequency domainsub-resource, the first reference sequence is used for generating thefirst RS sequence, the first reference sequence has a same length as thefirst RS sequence, the first RS sequence is generated from the firstreference sequence being cyclically shifted by t1 element(s), t1 is apositive integer; or, determining a second reference sequence, whereinan RS of the second reference sequence corresponding to the givensub-carrier is related to the given sub-carrier's position in the firstfrequency domain resource, the second reference sequence is used forgenerating the first RS sequence, the second reference sequence has asame length as the first RS sequence, RSs of the first RS sequencetransmitted out of the K frequency domain sub-resource(s) arecorresponding elements in the second reference sequence, the secondreference sequence is a pseudo random sequence; or, determining a secondreference and a third reference sequence, wherein an RS of the secondreference sequence corresponding to the given sub-carrier is related tothe given sub-carrier's position in the first frequency domain resource,the second reference sequence is used for generating the first RSsequence, the second reference sequence has a same length as the firstRS sequence, RSs of the first RS sequence transmitted out of the Kfrequency domain sub-resource(s) are corresponding elements in thesecond reference sequence, elements in the third reference sequence andRSs of the first RS sequence transmitted in one of the K frequencydomain sub-resource(s) have a one-to-one correspondence relationship,the second reference sequence and the third reference sequence arepseudo random sequences.
 3. The method according to claim 1, comprising:receiving downlink information; wherein the downlink information is usedfor determining the first frequency domain resource, or the downlinkinformation is used for determining the position(s) of the K frequencydomain sub-resource(s) in the first frequency domain resource, or thedownlink information is used for determining the first frequency domainresource and the position(s) of the K frequency domain sub-resource(s)in the first frequency domain resource.
 4. The method according to claim3, wherein the downlink information is system information block.
 5. Amethod in a Base Station that supports broadcast signals, comprising:transmitting a first radio signal on a first time-frequency resource;wherein the first radio signal comprises part or all of a first RSsequence, RSs in the first RS sequence are mapped in sequence from lowerfrequency to higher frequency in frequency domain, the firsttime-frequency resource belongs to a first frequency domain resource infrequency domain; the first frequency domain resource comprises Kfrequency domain sub-resource(s), K is a positive integer; (a)position(s) of the K frequency domain sub-resource(s) in the firstfrequency domain resource is(are) unfixed, RSs of the first RS sequencein a given frequency domain sub-resource are not related to a positionof the given frequency domain sub-resource in the first frequency domainresource, the given frequency domain sub-resource is any one of the Kfrequency domain sub-resource(s); the K is equal to 1, an RS of thefirst RS sequence corresponding to a given sub-carrier is related to thegiven sub-carrier's position relative to the K frequency domainsub-resource, or an RS of the first RS sequence corresponding to a givensub-carrier is related to the given sub-carrier's position in the firstfrequency domain resource; the given sub-carrier is located within thefirst frequency domain resource and out of the K frequency domainsub-resource(s).
 6. The method according to claim 5, comprising:determining a first reference sequence; wherein the K is 1, the RS ofthe first RS sequence corresponding to the given sub-carrier is relatedto the given sub-carrier's position relative to the K frequency domainsub-resource, the first reference sequence is used for generating thefirst RS sequence, the first reference sequence has a same length as thefirst RS sequence, the first RS sequence is generated from the firstreference sequence being cyclically shifted by t1 element(s), t1 is apositive integer;
 7. The method according to claim 5, comprising:determining a second reference sequence, wherein an RS of the secondreference sequence corresponding to the given sub-carrier is related tothe given sub-carrier's position in the first frequency domain resource,the second reference sequence is used for generating the first RSsequence, the second reference sequence has a same length as the firstRS sequence, RSs of the first RS sequence transmitted out of the Kfrequency domain sub-resource(s) are corresponding elements in thesecond reference sequence, the second reference sequence is a pseudorandom sequence; or, determining a second reference sequence anddetermining a third reference sequence, wherein an RS of the secondreference sequence corresponding to the given sub-carrier is related tothe given sub-carrier's position in the first frequency domain resource,the second reference sequence is used for generating the first RSsequence, the second reference sequence has a same length as the firstRS sequence, RSs of the first RS sequence transmitted out of the Kfrequency domain sub-resource(s) are corresponding elements in thesecond reference sequence, elements in the third reference sequence andRSs of the first RS sequence transmitted in one of the K frequencydomain sub-resource(s) have a one-to-one correspondence relationship,the second reference sequence and the third reference sequence arepseudo random sequences.
 8. The method according to claim 5, comprising:transmitting downlink information; wherein the downlink information isused for determining the first frequency domain resource, or thedownlink information is used for determining the position(s) of the Kfrequency domain sub-resource(s) in the first frequency domain resource,or the downlink information is used for determining the first frequencydomain resource and the position(s) of the K frequency domainsub-resource(s) in the first frequency domain resource.
 9. The methodaccording to claim 8, wherein the downlink information is systeminformation block.
 10. A User Equipment (UE) that supports broadcastsignals, comprising: a first receiver, receiving a first radio signal ona first time-frequency resource; wherein the first radio signalcomprises part or all of a first RS sequence, RSs in the first RSsequence are mapped in sequence from lower frequency to higher frequencyin frequency domain, the first time-frequency resource belongs to afirst frequency domain resource in frequency domain; the first frequencydomain resource comprises K frequency domain sub-resource(s), K is apositive integer; (a) position(s) of the K frequency domainsub-resource(s) in the first frequency domain resource is(are) unfixed,RSs of the first RS sequence in a given frequency domain sub-resourceare not related to a position of the given frequency domain sub-resourcein the first frequency domain resource, the given frequency domainsub-resource is any one of the K frequency domain sub-resource(s); the Kis equal to 1, an RS of the first RS sequence corresponding to a givensub-carrier is related to the given sub-carrier's position relative tothe K frequency domain sub-resource, or an RS of the first RS sequencecorresponding to a given sub-carrier is related to the givensub-carrier's position in the first frequency domain resource; the givensub-carrier is located within the first frequency domain resource andout of the K frequency domain sub-resource(s).
 11. The UE according toclaim 10, wherein the first receiver is used for determining a firstreference sequence; wherein the K is 1, an RS of the first RS sequencecorresponding to the given sub-carrier is related to the givensub-carrier's position relative to the K frequency domain sub-resource,the first reference sequence is used for generating the first RSsequence, the first reference sequence has a same length as the first RSsequence, the first RS sequence is generated from the first referencesequence being cyclically shifted by t1 element(s), t1 is a positiveinteger;
 12. The UE according to claim 10, wherein the first receiver isused for determining a second reference sequence; wherein an RS of thesecond reference sequence corresponding to the given sub-carrier isrelated to the given sub-carrier's position in the first frequencydomain resource; the second reference sequence is used for generatingthe first RS sequence; the second reference sequence has a same lengthas the first RS sequence, RSs of the first RS sequence transmitted outof the K frequency domain sub-resource(s) are corresponding elements inthe second reference sequence, the second reference sequence is a pseudorandom sequence.
 13. The UE according to claim 12, wherein the firstreceiver determines a third reference sequence; wherein elements in thethird reference sequence and RSs of the first RS sequence transmitted inone of the K frequency domain sub-resource(s) have a one-to-onecorrespondence relationship, the third reference sequence is a pseudorandom sequence.
 14. The UE according to claim 10, wherein the firstreceiver receives downlink information; wherein the downlink informationis used for determining the first frequency domain resource, or thedownlink information is used for determining the position(s) of the Kfrequency domain sub-resource(s) in the first frequency domain resource,or the downlink information is used for determining the first frequencydomain resource and the position(s) of the K frequency domainsub-resource(s) in the first frequency domain resource.
 15. The UEaccording to claim 14, wherein the downlink information is systeminformation block.
 16. A base station device that supports broadcastsignals, comprising: a first transmitter, transmitting a first radiosignal on a first time-frequency resource; wherein the first radiosignal comprises part or all of a first RS sequence, RSs in the first RSsequence are mapped in sequence from lower frequency to higher frequencyin frequency domain, the first time-frequency resource belongs to afirst frequency domain resource in frequency domain; the first frequencydomain resource comprises K frequency domain sub-resource(s), K is apositive integer; (a) position(s) of the K frequency domainsub-resource(s) in the first frequency domain resource is(are) unfixed,RSs of the first RS sequence in a given frequency domain sub-resourceare not related to a position of the given frequency domain sub-resourcein the first frequency domain resource, the given frequency domainsub-resource is any one of the K frequency domain sub-resource(s); the Kis equal to 1, an RS of the first RS sequence corresponding to a givensub-carrier is related to the given sub-carrier's position relative tothe K frequency domain sub-resource, or an RS of the first RS sequencecorresponding to a given sub-carrier is related to the givensub-carrier's position in the first frequency domain resource; the givensub-carrier is located within the first frequency domain resource andout of the K frequency domain sub-resource(s).
 17. The base stationdevice according to claim 16, wherein the first transmitter determines afirst reference sequence; wherein the K is 1, the RS of the first RSsequence corresponding to the given sub-carrier is related to the givensub-carrier's position relative to the K frequency domain sub-resource,the first reference sequence is used for generating the first RSsequence; the first reference sequence has a same length as the first RSsequence; the first RS sequence is generated from the first referencesequence being cyclically shifted by t1 element(s), t1 is a positiveinteger.
 18. The base station device according to claim 16, wherein thefirst transmitter determines a second reference sequence, wherein an RSof the second reference sequence corresponding to the given sub-carrieris related to the given sub-carrier's position in the first frequencydomain resource, the second reference sequence is used for generatingthe first RS sequence, the second reference sequence has a same lengthas the first RS sequence, RSs of the first RS sequence transmitted outof the K frequency domain sub-resource(s) are corresponding elements inthe second reference sequence, the second reference sequence is a pseudorandom sequence; or, the first transmitter determines a second referencesequence and a third reference sequence, wherein an RS of the secondreference sequence corresponding to the given sub-carrier is related tothe given sub-carrier's position in the first frequency domain resource,the second reference sequence is used for generating the first RSsequence, the second reference sequence has a same length as the firstRS sequence, RSs of the first RS sequence transmitted out of the Kfrequency domain sub-resource(s) are corresponding elements in thesecond reference sequence, elements in the third reference sequence andRSs of the first RS sequence transmitted in one of the K frequencydomain sub-resource(s) have a one-to-one correspondence relationship,the second reference sequence and the third reference sequence arepseudo random sequences.
 19. The base station device according to claim16, wherein the first transmitter transmits downlink information;wherein the downlink information is used for determining the firstfrequency domain resource, or the downlink information is used fordetermining the position(s) of the K frequency domain sub-resource(s) inthe first frequency domain resource, or the downlink information is usedfor determining the first frequency domain resource and the position(s)of the K frequency domain sub-resource(s) in the first frequency domainresource.
 20. The base station device according to claim 19, wherein thedownlink information is system information block.